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Bioengineering of Humanized Bone Marrow Microenvironments in Mouse and Their Visualization by Live Imaging
Published on: August 1, 2017
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Bioengineering of Humanized Bone Marrow Microenvironments in Mouse and Their Visualization by Live Imaging
Diana Passaro1, Ander Abarrategi1, Katie Foster1
1Haematopoietic Stem Cell Laboratory, The Francis Crick Institute.
Journal of Visualized Experiments : Jove
|August 16, 2017
Summary
Researchers developed a novel humanized bone marrow (BM) niche model in mice. This model allows in vivo imaging of human hematopoietic stem cells (HSCs) and their interactions within the BM microenvironment.
Area of Science:
- Hematology
- Stem Cell Biology
- Microenvironment Research
Background:
- Human hematopoietic stem cells (HSCs) are regulated by the bone marrow (BM) niche, a complex microenvironment.
- Understanding HSC-niche interactions is crucial for normal and malignant hematopoiesis.
Purpose of the Study:
- To develop a protocol for an ectopic humanized BM niche model in immunodeficient mice.
- To enable in situ live imaging of human HSCs within this model.
Main Methods:
- Constructed a humanized BM niche using various cellular components in immunodeficient mice.
- Utilized two-photon microscopy for in situ, single-cell resolution live imaging.
Main Results:
- Successfully formed humanized structures capable of long-term human hematopoietic engraftment.
- Demonstrated the feasibility of live imaging HSC behavior within the engineered niche.
Conclusions:
- The developed model provides a powerful tool for studying the human BM microenvironment.
- This approach facilitates functional characterization of HSC regulation in physiological and pathological states.
